First report of citrus yellow vein clearing virus in the Republic of Korea
Citrus yellow vein clearing virus (Potexvirus citriflavivenae, CYVCV, EPPO Alert list) is first reported from the Republic of Korea. A total of 118 leaf samples from nine regions of six provinces in Korea were collected from various citrus species in 2020 and 2021. CYVCV was identified using next-generation sequencing and reverse transcription polymerase chain reaction (RT-PCR) in 11 samples.
CYVCV was detected in 6 host plants: Eureka lemon (Citrus x limon), calamansi (x Citrofortunella microcarpa), kumquat (Fortunella japonica), Persian lime (Citrus x latifolia), pummelo (Citrus maxima) and mandarin (Citrus reticulata x sinensis), often in a mixed infection. This is the first report of calamansi and kumquat as hosts of CYVCV. Eureka lemon and Persian lime exhibited yellow vein clearing, leaf distortion, and water-soak lesions on the underside of the leaves, while the other hosts showed only yellowing symptoms on the leaves.
Sources
Jin T, Kim JK, Byun HS, Choi HS, Cha B, Kwak HR, Kim M (2024) Occurrence and multiplex PCR detection of citrus yellow vein clearing virus in Korea. The Plant Pathology Journal 40(2), 125. https://doi.org/10.5423/PPJ.OA.09.2023.0136